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I need help with math homework.

Algebra
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3u+z=15

u+2z+10

Oct 28th, 2014

3u+z=15

Multiplying by 2

6u+2z=30          1A

u+2z =10            2

Subtracting  2 from 1 A

5u =20

u =20/5 =4

12+z=15

z=15-12=3

Answer:

u=4

z=3

Oct 28th, 2014

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